The Sundance B20CC 2007 vs Sundance SV171 2010 comparison sits squarely in the category of decisions where specs alone won't tell the whole story: intended use, storage, and long-term ownership costs all factor in.
On paper these two are close siblings in the size department - Sundance B20CC 2007 at 19,0 ft versus Sundance SV171 2010 at 17,1 ft. Weight tells a clearer story for trailering families: the Sundance B20CC 2007 tips the scales at 1 595 lbs - 345 lbs more than the Sundance SV171 2010 at 1 250 lbs. That difference is meaningful if you're working within a half-ton or three-quarter-ton truck's tow rating, especially once you factor in a motor, gear, and fuel.
The power gap is worth calling out. Rated to 130 hp, the Sundance B20CC 2007 has a 40-hp advantage over the Sundance SV171 2010's 90-hp ceiling - enough to notice on acceleration and at cruising speed, particularly with a full passenger load. Both carry nearly identical fuel loads - 34 gal and 34 gal - so range won't be a tiebreaker here.
For family outings this is probably the sharpest distinction between the two. The Sundance B20CC 2007 is rated for 8 passengers, while the Sundance SV171 2010 caps at 5. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Sundance B20CC 2007 could be the deciding factor.
Bottom line: Choose the Sundance B20CC 2007 if your priority is putting more people on the water - it handles 8 passengers and at 19,0 ft it has the deck room to back that rating up comfortably. The Sundance SV171 2010 is the smarter pick if you want a lighter, easier-to-trailer boat rated for 5 that costs less to run day-to-day.